.el-carousel__item h3 {
  color: #475669;
  font-size: .32rem;
  text-align: center;
  opacity: 0.75;
  line-height: 4.55rem;
  margin: 0;
}

.banner img {
  display: block;
  width: 100%;
  height: 4.55rem;
}

.el-carousel__item:nth-child(2n) {
  background-color: #99a9bf;
}

.el-carousel__item:nth-child(2n+1) {
  background-color: #d3dce6;
}
